19. What is the range of pressure for the signal going to the control valve a) Between 4 to 20 mA b) Between 3 to 15 Psig c) Between 20 to 25 Psig d) Between 4 to 20 mV 83 tv MacBook Pro

An electric hot water heater consumes 3.1 kilowatts of electricity and converts it to heat. How long will it take the water heater to heat a 67 gallon tank of water from 10 degrees Celsius to 50 degrees Celsius? (1 kilogram of water is 0.37 gallons, 1 Calorie = 4200 J).  It may be helpful to refer back to the weekly handout for guidance on this problem. Your final answer should be in minutes (rounded to the nearest 10 minutes).

Shipra Manufacturing Company is thinking about development of a strong charge producing measure by adding one-ton limit during heaters. Each clump (one ton) of charge should go through 30 minutes of heater time, including stack and dump tasks. In any case, the heater potential use factor is just 80% because of stream limitations in different pieces of the framework. Required yield for the new design is to be 16 tons for each shift (8 hours). Plant (framework) proficiency is assessed at 50% of limit. (a) Determine the quantity of heaters required. (b) Estimate the percent of time the heaters will be inactive.

1. The development of thermodynamics since the 17th century, which was pioneered by the invention of the steam engine in England, and was followed by thermodynamic scientists such as Willian Rankine, Rudolph Clausius, and Lord Kelvin in the 19th century. explain what the findings or theories of the 3 inventors are! Please answer fast max 25-30.minutes thank u

QUESTION 3 A Type I offshore life jacket (i.e. personal flotation device) is the type worn by commercial fishermen - it is designed for extended survival in rough, open seawater. Consider such a life jacket that uses an impermeable foam material with a density of 32 kg/m³ - the other parts of the life jacket (straps, fasteners, etc) weigh 0.6 kg and are of negligible volume to the design. a) Draw a free body force diagram for the life jacket. b) Determine the minimum volume of foam material (in L) that is needed for the life jacket in order to provide a minimum 98 N net upward force when it is fully submerged in seawater (as required by US Coast Guard regulations).